Moving picture film reel



Marsh 11, 1941. w SEARJEANT 2,234,321

MOVING PICTURE FILM REEL Filed Feb. 8, 1938 INVENTOR Mum/a H. 55/; RJEAN7- BY AT RNEY Patented Mar. 11, 1941 UNITED STATES PATENT OFFICE MOVINGPICTURE FILM REEL tion of New York Application February 8, 1938, SerialNo. 189,367

7 Claims.

This invention relates to moving picture film reel constructions and hasfor one of its objects to provide a novel hub construction for such areel.

Another object of this invention is to provide the hub of a movingpicture film reel with novel fastening means for fastening the hub tothe sides of the reel.

A further object of this invention is to provide the hub of the reelwith novel reinforcing means.

All these and other objects and attendant advantages will become morereadily apparent from the detailed description of the invention whichfollows, reference being had to the accompanying drawing in which Figurel is a side elevation of a moving picture film reel embodying myinvention.

Figure 2 is an edge elevation thereof.

Figure 3 is a vertical sectional view of the hub of the reel, thesection being taken on the line 3;r3;r of Figure 2.

Figure 4 is a vertical sectional View of the hub of the reel, thesection being taken on the line Sn-4:10 of Figure 3.

Figure 5 is a sectional view of the hub portion of the reel taken on theline 5:12-53: of Figure 1.

Figure 6 is an end elevation of the pro-formed blank from which the hubof the reel is made up.

Figure '7 is a top plan view of the hub blank illustrated in Figure 6.

Figure 8 is a detail perspective view of the bearing sleeve or core ofthe reel.

In the several figures of the drawing like reference numerals indicatelike parts.

Moving picture film reels, especially the larger sizes, when made up ofsheet metal, have a tendency to bend, get out of shape or their sidesbecome loosened on the hub due to the weakness in the construction ofthe hub and its fastening means to the sides of the reel. Ihese weakpoints a the construction of sheet metal moving picture reels have beensuccessfully overcome in my present invention by the use of a novel formof sheet metal hub which embodies novel fastening means for itsanchorage to the sides and its support thereon.

As illustrated in the several figures of the drawing the sides 2, 2 ofthe reel are provided with acircurnferentially extending reinforcingbead 3, suitable radially extending reinforcing embossings 4, 4 andcircularly arranged openings 5, 5. The center of each side is providedwith a small circular depression 6 which is perforated in the centerwith a substantially square hole. A square bearing sleeve I extends thruthe holes of both of the sides of the reel and lugs 8, 8 on the outerends of the sleeve are bent back against the sides to hold the sleeveanchored in the square openings of the reel and provide the reel with anelongated bearing on which it is adapted to be supported by a spindle.One side of the bearing sleeve, as well as one side of each of thesquare center holes in the sides 2, 2 of the reel, are slotted in such amanner that all of the slots are in line with each other and provide akeyway for the engagement of a key carried by the supporting or drivingspindle for driving purposes.

In order to strengthen the sides of the reel around the square holesthereth-ru and prevent the bearing sleeve from working loose in theseholes, a reinforcing bar 9 is anchored to the inside of each of thesides of the reel. This reinforcing bar extends diagonally across thecenter portion of the sides as illustrated in Figure 3 and is providedwith a square hole with a keyway on one side so as to match the holes inthe sides of the reel. The added thickness of the reinforcing bar thusprovides each side of the reel with a suificient bearing surface aroundthe square openings so that the bearing sleeve anchored therein will notwork loose therein when the driving torque is applied by a drivingspindle inserted into the bearing sleeve.

For the purpose of anchoring the outer ends of each of the reinforcingbars to the side of the reel, each of the bars is provided at both endswith a circular hole In and the sides of the reel are provided with theopenings ll, ll which have their edges flared inwardly to form a shortanchoring sleeve surrounding the opening on the inside of the reel.These anchoring sleeves project thru the holes in the anchoring bars sothat the outer ends of the sleeves can be expanded and their edgesrolled over to firmly clamp the bars against the sides of the reel asillustrated in Figures 3 and 4. The holes H, it may also be used asfinger holes for the insertion of two fingers when handling the reel.

The reel is provided with a hub of predetermined diameter whichsurrounds the bearing sleeve to suitably support and hold the inner endof the roll of film on the reel. This hub is made up of sheet metal ineither one or more sections. In the form illustrated in Figures 6 and 7the hub is made up of a single strap l2 which is shaped and formed asillustrated in these figures 'so as to have the tubular cross members orribs I3, l3 formed on one side thereof. The opposing sides l4, M of theouter ends of-these cross members extend beyond the edges of the metalstrap and in conjunction with the lugs I5, l5 which project directlyfrom the edges of the metal strap serve as anchoring lugs with which themetal hub is rigidly held between the sides of the reel as willhereinafter appear.

The sides of the reel are provided with suitable circular holes l6, [6as well as the slots I1, I! and these holes and slots are arranged sothat with the metal strap l2 formed into a cylinder,

, the projecting end portions l4, 14 of the tubular cross members orribs l3 and the lugs l5 register with the holes [6 and slots l1respectively and project therethru. The ends of the tubular crossmembers and the lugs are bent or folded back against the outside of thereelto draw the sides thereof against the edges of the metal strap toproperly space the sides of the reel and hold the hub securely in placebetween them.

In the formation of the hub the lugs i5 extend from the edgestangentially thereto, whereas the outer ends I4 of the tubular crossmember extend substantially radially thereto. Furthermore the lugs l5,when bent against the sides of the reel, extend outwardly of the hub,whereas the ends I 4 of the cross members or ribs extend inwardly of thehub on the outside of the reel. In this way the inwardly extendinganchoring ends M of the tubular cross members or ribs, when foldedagainst the side of the reel, provide for the hub a firm anchorage whichcannot be loosened in the handling of the reel. This is due to the factthat the anchoring ends M are located within the hub area and notoutside thereof and extend substantially radially to the hub so that abending of the sides of the reel outwardly of the hub. cannot pry theseends loose.

Anchoring lugs such as are provided by the anchoring ends I4 also makepossible the use of a greater number of large or longer lugs for a givenperimeter of the hub and the ends of the tubular cross members or ribswhich carry the lugs increase the edge surface of the hub against whichthe sides of the reel are drawn. This further increases the rigidity ofthe reel and prevents its sides from working loose from the hub.

While I have shown the hub made up of a single strap as illustrated inFigures 6 and 7, this strap may be divided into sections by dividing thestrap, as for example, along the line A-A so that the hub may be formedin two sections.

For the purpose of holding the end of a film on the hub when it is to bewound up on the reel, the end is inserted into any of the transverseslits 18 provided in forming the tubular cross members or ribs l3. Inthis way the end of the film is located and held in a hollow cross.member or rib during the winding and unwinding of the film on the hub ofthe reel. For this reason no separate holding means or slot need beprovided on the hub in order to hold the end of the film on the hub whenthe film is being wound up thereon.

As will be seen from an inspection of Figures 3, 4 and 8 the bearingsleeve or core 1 is provided on three sides with the lugs l8, l8 whichare struck up so as to form shoulders which holdthe reinforcing bars 9,9 in place on the sleeve in their proper position in contact with thesides of the reel while the lugs 8, 8 are folded over the outside of thereel to lock the sleeve in the reel. The bearing sleeve or core 1 isformed of sheet metal as illustrated in Figure 8 and each end of oneside is cut out to provide the keyways l9, l9 therein. The middleportion of the sleeve, which is not cut away, keeps the sleeve expanded.

I claim:

1. In a reel construction, the combination of a pair of sides having aplurality of holes therethru, a cylindrical sheet metal hub between saidsides, tubular ribs on the inside of said hub adjacent the inner surfacethereof and extending axially of the hub and beyond the ends thereof;and thru the holes in said sides of the reel with the ends thereof bentover the outer face of the sides of the reel.

2. In a reel construction, the combination of a pair of sides having aplurality of holes therethru, a cylindrical sheet metal hub between saidsides, tubular ribs formed in the sheet metal hub adjacent the innersurface thereof and axially thereto, and anchoring lugs carried by andforming extensions of said tubular ribs for engagement thru the holes inthe sides of the reel and for fastening against the outer face of thesides of the reel.

3. In a reel construction, the combination of a pair of sides having aplurality of holes therethru, a sheet metal hub between said sides, tu-

bular ribs formed in the hub adjacent the inner wall with the opposinglongitudinal edges of the ribs arranged so as to provide slits in theperiphery of the hub and extensions on said tubular ribs for engagementthru said holes and for fastening against the face of the sides of thereel.

4. In a reel construction, the combination of a pair of sides, a bearingsleeve mounted centrally of said reel, said bearing sleeve comprising asheet metal tube of substantially rectangular cross section formed of asingle sheet of metal with the free longitudinal edges abutting eachother intermediate one of the sides of the sleeve, keyways extendinginwardly of the ends in the side of said sleeve formed by the abuttinglongitudinal edges thereof and held expanded by the middle portion ofthe abutting longitudinal edges of the sleeve, shoulder lugs struck upfrom the sides of the sleeve for the sides of the reel to restthereagainst and lugs forming extensions of the sides of the sleeveadapted to be folded over the outside of the sides of the reel to holdthe sides of the reel on the sleeve between the extension lugs and theshoulder lugs thereof,

5. In a moving picture reel construction the combination of a pair ofsides having holes therein, a cylindrical sheet metal hub, tubular ribsformed integrally with and on the inside of said hub; and lugs formingextensions at the ends of each of said tubular ribs and extendingthrough the holes in said sides of the reel so as to be arrangedsubstantially radially in the sides of the reel and bent over the sidesof the reel in opposite directions away from each other.

6. In a moving picture reel construction the combination of a pair ofsides having holes therein, a cylindrical sheet metal hub, tubular ribsformed integrally with and on the inside of said hub; and a partiallycylindrical lug at the end of each of said tubular ribs and extendingthrough the holes in the sides of the reel and bent over the sides ofthe reel in the direction of rotation of the reel.

'7. In a reel construction, the combination of a pair of sides, eachhaving a pair of holes therethru at diametrically opposite points of thecen-- ter thereof, a reinforcing bar extending diametrically across thecenter of each of the sides of the reel on the inside thereof, each ofsaid bars having a pair of holes therethru, the edges of the holes inthe sides being turned inward th u the holes in the reinforcing bars andback upon the edges of the latter to clamp the bars in place on saidsides, a bearing sleeve mounted between said sides and supported by saidreinforcing bars centrally of the sides of the reel, means provided onsaid bearing sleeve for holding said sides with the reinforcing barsspacedly fastened together, a sheet metal hub between said sides of thereel and encircling said reinforcing bars, tubular ribs 5

